Update Dockerfile

Dockerfile

@@ -18,18 +18,9 @@ RUN if [ $TARGETARCH = "amd64" ]; then \
 RUN rustup target add $(cat /tmp/arch)-unknown-linux-musl
 
 COPY . .
-RUN --mount=type=cache,target=/src/builder/target/ echo "Compiling" \
-    if [ $(cat /tmp/arch) = "aarch64" ]; then
-        export CC_aarch64_unknown_linux_musl=clang
-        export AR_aarch64_unknown_linux_musl=llvm-ar
-        export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_RUSTFLAGS="-Clink-self-contained=yes -Clinker=rust-lld"
-    else
-       echo "amd64 mode"
-    fi \
-    cargo build --target=$(cat /tmp/arch)-unknown-linux-musl --release
-    cp target/$(cat /tmp/arch)-unknown-linux-musl/release/expander /tmp/expander
-
-FROM scratch
+RUN --mount=type=cache,target=/src/builder/target/ bash build.sh
+
+FROM alpine
 
 WORKDIR /src/app